Qantiative determination of C-reactive protein in serum. Useful as an indication of infectious disease, inflammatory states and tissue injury.

Limitations:

CRP is frequently elevated during pregnancy, in patients on birth control pills and with some IUDs. High CRP values may cause false elevations of alpha-1-antitrypsin. CRP does not rise in many viral disorders or some GI carcinomas. Higher values may occur in some patients over 60 years of age, but changes in serial values will indicate patient status.